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Mechanical behavior and health monitoring by Acoustic Emission of unidirectional and cross-ply laminates integrated by piezoelectric implant

机译：通过声发射对压电植入物集成的单向和交叉层压板的机械行为和健康状况进行监控

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摘要

Recent progress in sensor technologies, signal processing and electronics has made it possible to fulfill the need for the development of in-service structural health monitoring (SHM) systems. This study presents a health monitoring of composite materials integrated by piezoelectric sensor using Acoustic Emission (AE) technique. A series of specimens of composite laminates with and without piezoelectric implant were subject to three-point bending in static and creep tests while continuously monitoring the response by the AE technique. The analysis and observation of AE signals lead to the identification of the acoustic signatures of damage mechanisms in composite laminates. The mechanical behavior of composites with and without integrated sensor shows no difference in the form. The incorporation of piezoelectric sensor influences specially the fracture load and causes low degradation of mechanical properties of materials. One of the major differences between the two types of materials (with and without embedded sensor) is the intense acoustic activity in the integrated material.
机译：传感器技术，信号处理和电子学方面的最新进展使得满足开发在役结构健康监测（SHM）系统的需求成为可能。这项研究提出了使用声发射（AE）技术的压电传感器集成的复合材料的健康监测。一系列带有和不带有压电植入物的复合材料层压板在静态和蠕变测试中都经受了三点弯曲，同时通过AE技术连续监测响应。声发射信号的分析和观察导致复合材料层压板损伤机理的声学特征的识别。有和没有集成传感器的复合材料的机械性能在形式上没有差异。压电传感器的加入特别影响断裂载荷，并导致材料的机械性能降低。两种类型的材料（带和不带嵌入式传感器）之间的主要区别之一是集成材料中的强烈声活动。

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  • 来源
    《Applied Acoustics》 |2014年第12期|118-125|共8页
  • 作者

    Sahir Masmoudi; Abderrahim El Mahi; Saied Turki; Rachid El Guerjouma;

  • 作者单位

    LUNAM University, Maine University, Acoustic Laboratory of Maine University (LAUM) CNRS UMR 6613, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France,Sfax University, Faculty of Sciences of Sfax, Department of Physics BP1171, 3000 Sfax, Tunisia;

    LUNAM University, Maine University, Acoustic Laboratory of Maine University (LAUM) CNRS UMR 6613, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France;

    Sfax University, Faculty of Sciences of Sfax, Department of Physics BP1171, 3000 Sfax, Tunisia;

    LUNAM University, Maine University, Acoustic Laboratory of Maine University (LAUM) CNRS UMR 6613, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Laminates; Piezoelectric implant; Three-point bending; Static; Creep; Acoustic Emission; Damage;

    机译：层压板压电植入物;三点弯曲;静态的;蠕变;声发射;损伤;

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